Slitting and rewinding machine



Feb. 26 1924. 1,484,843

E. J. OCLAIR SLITTING AND REWINDING MACHINE Filed May '7. 1923 3Sheets-Sheet 1 INVENTOR- EDWARD J. O'CLAIR.

ATToR NEY.

Feb. 26 1924. 1,484,843

E. J. OCLAIR SLITTING AND REWINDING MACHINE Filed May '7. 1925 3Sheets-Sheet 2 Lil; i i; 52

' I I: u

INVENTOR- EDWARD J. O'CLAIR.

ATTORNEY.

Feb. 26 1924.

E. J. OCLAIR SLITTING AND REWINDING MACHINE Filed May 7, 1923 3Sheets-Sheet 3 INVENTOR- EDWARD J. O'CLAIR.

ATTORNEY.

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I cost of production.

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& COATED PAPER COMPANY, OF NASEUA, NEW HPSHIBE, A. CORPORATION OFSLITIING AND INDING MACHINE.

Application filed may 7, 1928. Serial No. 837,041.

To all whom it may concem:

Be-it known that I, EDWARD J. QCLAIR, a citizen of' the United States,and resident of Nashua, in the county of Hillsboro and State of NewHampshire, have invented cer tain new and useful Improvements in Slitting and'Rewinding Machines, of which the following is a specification.

This invention relates to machines for converting a comparatively wideweb of sheet material such as paper or cloth into a plurality of narrowstrips in the form of coils or small rolls. Such machines are commonlyknown as slitting and .re-winding machines, and several difierent typesthereof are well known.

No machines of this character are really continuous in operation. Theymay run continuously and at quite a high speed so long as the supply orweb roll is not exhausted Land during the slitting and rewindinggof.strips into coils of predetermined diameters, but frequent stoppages arenecessarilyeifected. Most of the stoppages and consequent idleness ofthemachine are to enable the completed coils to be removed and permitthe operator to connect the ends of. the strips to a fresh arbor for thenext coils. Further idleness is due to the necessary occasionalreplenishment of the supply. WVhena supply roll is exhausted the machinemust be stopped during the re moval of the core of the exhausted roll,the placing of a fresh supply roll in position, and the piecing together(as by suitable adhesive) of the ends of the two webs.

it will be readily understood that since the purpose of the machine isto produce coiled strips, the element of time during which the machineis stopped for the reasons explained must be considered in the cost ofthe attendants must enter into the cost of producing the coils just asmuch when the-machine is idle for efiecting the changes referred .to'aswhen themachine is time required for removing completed coils,-

and starting fresh coils.

In other words the. overhead expense of the plant and the time Of theaccompanying drawings which illustrate my im rovements as applied to aknown type of sitting and re-winding' machines:

Figure 1 is a side elevation of the complete machine, partly broken out.

Figure 2 represents a front elevation, partly broken out, looking fromthe left of Figure 1.

Figure 3 represents a vertical section on line 3-3 of Figure 2.

Figure 4 is a detail perspective view off the gearing by means of whicha motor is?! caused to effect a raising, or permitting the. lowering, ofthe frame winch carries the" pressure r011.

Figure 5 represents a sectionaldetail here,- inafter referred to. a

Similar reference characters designate similar parts in all of theviews.

The frame of the machine is indicated at 12. In the type of machineillustrated, the web of paper or other material a: leads from a supplyroll 00 which, in the present machine, is supported at the rear of themachine, the paper then passing under a suitable guide roll or rolls 13,past a guide roll ll, around guiderolls 15, 16, is slitted after passingroll 15 by means of cutter disks 17 which are spring-pressed toward ahard metal roll 18 which not only cooperates with the disks 1? inefi'ecting the slitting and is therefore sometimes referred to as thecutter roll, but also, as will presently appear, acts as a feed roll forthe superimposed coils a" resulting from the strips being wound on anarbor shaft 19.

Parallel with the roll 18 is a roll 20, and the coils bear on the tworolls 18, 20, both of which are driven in the same direction by gearingWell known and not necessary to illustrate or describe in detail, thetwo rolls acting as feed rolls to effect rotation of the coils bearingthereon. A pressure roll 21 which bears on the upper surfaces of thecoils serves to maintain them in smooth contact with the feed rolls,said pressure roll being driven by mechanism and gearing which will bedescribed hereinafter.

The cutter disks 1'? are carried by levers 22 pivotally mounted on a bar.23 and acted upon by springs 24 to cause the disks to exert sufiicientpressure on the material a:

against the roll 18 to effect the slitting. The

of, are substantially the same as disclosed in Letters Patent No.1,076,189, issued 00- tober 21, 1913, to Cameron & Birch.

One of my improvements consists in the provision of meansforfacilitating the disposition of a completed set of coils 01:. Suchcoils, especially when of large diameter, are difficult to handle ormove when shifting them from position on the cutting and feed rolls 18,20, to a place for disassembling. As shown by Figures 1 and 3, I providea coil shelf 25 at the back of the machine above the support/for thesupply roll 00 the upper surface 0 the shelf being substantially flushwith the upper surfaces of the rolls 18, 20. A completed set of coilsmay be easily and quickly rolled onto said shelf between two uprights 60hereinafter described, and is arrested by a ridge 26 at the rear edge ofthe.

shelf. As shown, the inner edge of the shelf is connected by suitablecleats or straps 27 to a transverse bar 28 of the machine, and

its outer edge is supported by one or more struts 29. After a completedset of coils has been shifted onto the back shelf, and consequently outof the way of the immediate resumption of coiling to produce anotherset,

said completed .set can be taken care of by the attendant who effectsthe disassembling, as by sliding the set along a gmdeWa-y or bridge 30onto a disassembling table 31 a portion of which is indicated inFigure 1. It is to be assumed that the table 31 is at a little distanceaway to one side of the machine, and that the bridge 30 extends theretoin a somewhat diagonal direction so that the set of coils, after beingswung a little, can be slid lengthwise of the bridge. Said bridge andtable however are not parts ofthe machine and are not claimed herein.They are referred to merely to aid the explanation of the readiness withwhich a completed set of coils can be dis osed of to permit resumptionof coiling. uch resumption can start as soon as a completed set has beenrolled onto the shelf 25.

In machines of this character it is cus tomaryto employ what are calledcoil guards, which extend past and engage the outer sides of the endcoils of the'set. Such devices are illustrated herein as comprising arms32 having coil-engaging strips 33, the arms being pivotally connected tobrackets 34 removably mounted on a transverse bar and each being sosecured to the bar that it may be adjusted along the bar and secured bya hand screw 36. In machines of this type as heretofore constructed, thecoil guards and their supporting bar are at the rear of the machine. Insuch location they would interfere with movement of a completed set ofcoils onto the shelf 25. My improvement in this respect consists in thecoil guardrarms mounted on the bar 35 which is at the front of themachine instead of at the back, so as not to interfere with the rollingof the coils m ontothe coil shelf 25 which, if to serve the purposehereinbefore described, must be at the rear of the machine.

The roll 21 hereinbefore referred to exerts pressure on the coils duringthe re-winding or coiling, in order to effect uniform tension on all thecoils by holding them in smooth uniform contact with the feed rolls 18,2Q.

Said pressure roll is mounted in bearings 37v (Figs. 2 and 3) connectedby a cross bar 38 having an upstanding rib 39 to permit the removablemounting thereon of a series of weights 40. Extending down from thebearings 37 are bars 37 which are suitably,

mounted in the frame-of the machine,and parallel therew1tlrare' two rackbars'41. The cross bar 38, bearmgs'37, the guide bars 37 and the rackbars 41.constitute, as a whole,

41 are engaged by pinions 44 by means of which the frame and itspressure roll 21 may be manually shifted up or down if occasion renderssuch operation desirable. To enable such-movements to be effectedquickly however, regardless of'the size and weights of the completedcoils, and especially'when' the frame and its weights are to be raisedto elevate the pressure roll when a set of completed coils is to beremoved for disassembling, I. employ the pneumatic mechanism which willbe presently describedQ During the operation of the machine the pressureroll is positively driven in a manner similar to that described in thePatent 1,07 6,-

189 hereinbefore referred to. The mechanism for so driving the pressureroll includes a bevel gear 45 at one end of the pressure roll, said gearmeshing with a gear 46 at the upper end of a vertical shaft 147 whichslides in suitable bearings in the frame of the machine and is soconnected with the vertically movable frame which carries the pressureroll as to move vertically'therewith. The shaft 47 is driven by spiralgearing indicated at 48,

said shaft having, asusual, a splined connection with said gearing.

The shaft 43, in addition to the two pinions42, has at one end (Fig. 4)a pinion 49 which is in'mesh with a rack bar 50 the lower end of whichcarries or is connected to a piston 50. in a rigidly mounted verticalcylinder '51., A pipe 52 having a valve 53 provided with a handle 54 ina location within immediate reach of the attendant at the front'of themachine, leads from a source of compressed air to the lower part of thecylinder. The valve is, preferably, of a well known typewhich, byturning it onevwa'y compressed air is admitted to the cylinder to effecta speedy lifting of the vertically movable frame carrying the pressureroll, and by turning it the other way will permit air to escape and theconsequent lowering of the said frame. This mechanism constitutes apneumatic motor which, at the will of the operator, will effect a quicklifting of the heavy frame to raise the pressure roll high enough toenable a completed set of coils to be removed onto the receiving shelf25. Then, upon turning the valve handle the other way, the air can bepermitted to escape from the cylinder at a regulatable slow speed sothat the frame and the pressure roll will not descend at too high aspeed.

In other words, the pneumatic motor not only enables the frame andpressure roll to be raised quickly when coiling has been completed, butalso cushions descent thereof so as to prevent damage to a freshlylocated arbor shaft.

It is sometimes desirable to partially counterbalance the vertically,movable frame. As indicated in Figure 1 the counterbalancing mechanismcomprises a chain connected to the lower end of each rack bar 41 andpassing over a pulley 56 and having a weight 57 suspended from its otherend.

When a set of completed coils has been disassembled on, for instance,the table 31, the arbor thereof is free to be used for another coilingoperation. In order that it may be in quickly accessible position foruse as soon as one set of coils and their arbor have been pushed orrolled onto the shelf 25, I provide an arbor holder comprising a pair ofrecessed brackets 58 secured to and projecting slightly from atransverse front bar 12' of the frame. dicated at 19' is placed in theholder 58' (Fig. 3) where it is in quickly accessible position for theattendant when he is ready to begin a fresh coiling operation. Theattendant who does this always stands at the front of the machine. Thearbor holder 58 is more particularly for use when the machine isproducing large coils. lVhen the coils beingproduced are small ones, itis desirable that the spare arbor to which the ends of the strips are tobe attached at the start of a coiling operation shall be in suchposition that the attendant can grasp it as he withdraws his hands fromthe set which he has pushed onto the shelf 25. For this purpose Iprovide an arbor holder 59 in an elevated position near the back of themachine, said holder being trough-shaped and high enough to enable acompleted set of coils to be rolled under it. Said holder 59 issupported by a pair of uprights 60 at its ends. The uprights arepreferablyremovable so that they and the holder 59 can be separated fromthe machine if desirable.

The spare arbor in-' In order to connect the ends of a series of stripsto an arbor, to begin a coiling opera tion, it is customary to em loywhat is known as a crimping bar sue as indicated at 61. It is desirable,for the sake of economizing time, that the crimping bar shall also be inquickly accessible position for use as. soon as an arbor shaft has been.placed in position with its reduced ends entering the usual verticalgrooves in the bars 37. As indicated in Figures 1, 2 and 3, some of theweights 40 are provided with U-shaped brackets 62 which will hold thecrimping bar during operation of the machine in a position where it canbe quickly reached by the attendant at the front of the machine.Inasmuch however as the weights 40 are not always employed, not beingreuired for some kinds of work, I provide other crimping bar holders 63(see Fig. 5) which are also U-shaped but have hook extensions 64 whichengage the rib 39 of the cross bar of the vertically movable frame whenthe weights are removed therefrom. In both of the forms shown in'Figures3 and 5, the crimping bar holder has a portion which engages the rib 39.In Figure 5 the hook extensions 6 are integral portions of the crimpingbar holder, while in Figure 3 the combined weight 40 and its U-shapedbracket 62 comprise the means for retmovably mounting a crimping bar onsaid r1 In the operation of the machine, the several improvementsdescribed coact in saving time in the production of slitted and re-'wound material, by reducing the length of the period of idleness betweenthe completion of a set of coils and the resumption of another coilingoperation. This is because as soon as a set of coils has reached thepredetermined diameter, the attendant who stands at the front of themachine in position to sever the strips and secure the ends on the coilsin the usual manner, operates the valve handle 54 to admit air to thecylinder 51. The pressure roll 21 quickly rises and the attendant pushesthe set of coils onto the shelf where anyone can take care of it fordisassembling. The attendant then takes an arbor 19 which is withinreach and fits it to position between the bars 37, takes the crimpingbar from its holder and connects the ends of the web strips to saidarbor in the usual manner, and then operates the valve handle topermit'the pressure rollcarrying frame to descend, and starts the freshcoiling. All of his actions can be performed while he remains at thefront of the machine.

Therefore his movements, while performing said actions, are unrestrictedbecause both the supply roll 00 and the coil-receiving shelf 25 are atthe same (the rear) side of the machine.

Having now described my invention, I claim:

1. In a slitting and re-winding machine having rolls for supporting anddriving the coiled strips, a coll-receiving shelf behind said rolls, asupport for a supply roll at the same rear side of the machine as saidshelf, and coil guards supported in front of the rolls.

2. In a slitting and re-Winding machine having rolls for supporting thecoiled strips, a coil-receiving shelf behind said rolls, a support for asupply roll at the same rear side of the machine as said shelf, atransverse bar in front of the rolls, and coil-guard arms adjustablymounted on said bar and projecting rearwardly past the ends of thecoils.

3. In a slitting and re-Winding machine having a vertically movableframe provided with a pressure roll to bear on the coils, rack barsconnected with said frame, a poweractuated rack at one side of theframe, and a shaft having pinions meshing with said rack bars and rack.

4. In a slitting and re-winding machine having a vertically movableframe provided with a pressure roll to bear on the coils, rack barsconnected with the frame, a rack at one side of the frame, a cylinderhaving a piston from which the last mentioned rack extends, connectionsfor supplying the cylinder with compressed air, and a shaft havingpinions meshing with said rack bars and with the rack which extends fromthe c linder.

5. In a slitting and re-win ing machine having a vertically movableweighted frame provided with a pressure roll, a pneumatic motor forraising 'the frame and pressure roll and for cushioning downwardmovement thereof.

6. In a slitting and re-winding machine having rotary supporting anddriving means for the coiled strips, a spare arbor holder at the frontof the machine and a spare arbor holder at the rear in an elevatedposition.

In testimony whereof I have aflixed my signature.

EDWARD J. OCLAIR. Witnesses:

MYRON BUSWELL, V. E. NUNEG.

